1993 240sx: water pump belt squeals until warmed up - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

surreybc · 10-06-2008, 09:38 PM

the belt is new and and has right tension. this has been going on for several years. i moved the belt over to other side of pully and this stopped noise for awhile. ( i have a 3 rib belt on a 4 rib pulley so i have two choices of how the belt fits on). the old 4 rib belt made noise as well. i tried a ton of dishwasher soap and that only worked for short time. im guessing it is the water pump pulley out of alignment as the pump has been replaced several times. any feedback appreciated.

projectRDM · 10-06-2008, 10:24 PM

There's not proper tension if it squeals. Simple. When the belt warms up the rubber expands just a hair, enough to stop the noise. Loosen the belt a little.

surreybc · 10-06-2008, 10:40 PM

I think the belt also becomes more pliable/softer as it warms which would reduce friction? I've already experimented with different tensions. the belt is currently on the loose side.

KwKouki · 10-06-2008, 10:48 PM

RDM you sure you didnt mean tighten it? Ive always had squealing problems with a loose belt. Tightened it up a bit and all noise went away

surreybc · 10-06-2008, 10:52 PM

Quote:

Originally Posted by KwKouki

RDM you sure you didnt mean tighten it? Ive always had squealing problems with a loose belt. Tightened it up a bit and all noise went away

pretty sure he meant tighten but my belt is rubbing on the sides. i can see scuff marks on side of belt.

projectRDM · 10-07-2008, 10:25 AM

It will squeal either way, tight or loose. Too tight though will quiet down after it warms up.

10-06-2008, 09:38 PM	#1
surreybc Zilvia Junkie Join Date: Mar 2008 Location: surrey Posts: 359 Trader Rating: (1) Feedback Score: 1 reviews	1993 240sx: water pump belt squeals until warmed up the belt is new and and has right tension. this has been going on for several years. i moved the belt over to other side of pully and this stopped noise for awhile. ( i have a 3 rib belt on a 4 rib pulley so i have two choices of how the belt fits on). the old 4 rib belt made noise as well. i tried a ton of dishwasher soap and that only worked for short time. im guessing it is the water pump pulley out of alignment as the pump has been replaced several times. any feedback appreciated.

10-06-2008, 10:24 PM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	There's not proper tension if it squeals. Simple. When the belt warms up the rubber expands just a hair, enough to stop the noise. Loosen the belt a little. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

10-06-2008, 10:48 PM	#4
KwKouki Nissanaholic! Join Date: Apr 2003 Location: Key West, FL Age: 44 Posts: 2,212 Trader Rating: (6) Feedback Score: 6 reviews	RDM you sure you didnt mean tighten it? Ive always had squealing problems with a loose belt. Tightened it up a bit and all noise went away __________________

10-07-2008, 10:25 AM	#6
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	It will squeal either way, tight or loose. Too tight though will quiet down after it warms up. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

10-06-2008, 10:40 PM	#3
surreybc Zilvia Junkie Join Date: Mar 2008 Location: surrey Posts: 359 Trader Rating: (1) Feedback Score: 1 reviews	I think the belt also becomes more pliable/softer as it warms which would reduce friction? I've already experimented with different tensions. the belt is currently on the loose side.